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IGU working group 'landscape synthesis - geological foundations of complex landscape management.' activities, 1984-85.
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The results of this investigation, which demonstrated the observed intensity distribution for Aqaba city, shows a relationship between local conditions, such as geological foundations and topographical characters, and the extent of the destruction.
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Relationship is established between some periods in the history of seismic prospecting and the changes in the understanding of its physical and geological foundations.
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| Liupan Mountain basin has good petrogeologic conditions. In the explorationarea, Paleogene system and upper Palaeozoic group are two sets of low--resistivitymarker formations, and the low Palaeozoic and Proterozoic groups compose thehigh resistivity basement. This kind of electric characteristic combination offersprerequisite for studying deep electric characteristics by use of EMAP. 8 channelswill be used in field acquisition with the frequency of 0. 001--344Hi for receiving.In data processing, low--pass spatial... Liupan Mountain basin has good petrogeologic conditions. In the explorationarea, Paleogene system and upper Palaeozoic group are two sets of low--resistivitymarker formations, and the low Palaeozoic and Proterozoic groups compose thehigh resistivity basement. This kind of electric characteristic combination offersprerequisite for studying deep electric characteristics by use of EMAP. 8 channelswill be used in field acquisition with the frequency of 0. 001--344Hi for receiving.In data processing, low--pass spatial filtering and correlation technique are used tosuppress high--frequency static displacement and noises to enhance useful signals. 2D finite element inversion, 2--D layered medium inversion and electric interfaceimaging are used in data interpretation so as to respectively obtain corresponding inversion section and electric interface. In combination with geological, drilling, seismic and gravity data, the electric data will be analysed to describe fault, basementstructure, local structure and main source bed feature, thus providing the evidencebasis for further exploration. As EMAP technique has many advantages (such asdeeper exploring depth, no shield effect from high--resistivity layer, good sensibilityto low resistivity zone, easy operation, low cost and quick returns, etc. ), thistechnique can counteract the weakness of seismic exploration and become a very important prospecting technique in hydrocarbon exploration of Liupan Mountainbasin. | 六盘山盆地具有良好的石油地质基础条件，工区内的下第三系和上古生界地层为两套低阻标志层，下古生界和元古界地层构成高阻层基底。这种电性组合特征为利用EMAP法研究深层电性特征提供了前提。野外采集采用8道，观测频率选用0．001～344Hz。在资料处理中，主要采用低通空间滤波和相关技术压制高频静态位移和噪声，以增强有效信号。资料解释采用二维有限元反演、二维层状介质反演和电性界面成像技术等方法，可以分别得到相应的反演剖面和电性界面。将这些电性资料和其它有关的地质、钻井、地震和重力等资料结合在一起进行分析，便可描述断层、基底结构、局部构造，以及主要生油层特征，为进一步的勘探工作提供依据。由于EMAP法具有探测深度大，不受高阻层屏蔽的影响，对低阻层反应灵敏、施工简单灵活、成本低、见效快等特点，因此此法有可能弥补地震勘探的不足，成为六盘山盆地油气勘探中一种重要的物探方法。 | The concept of ground water reservoir, storage principle and its theoretical basis, storage conditions and methods, as well as high economic effect of the storage are discussed in the paper It is suggested that a model engineering for the ground water reservoir storage should be set up and utilized to mitigate the serious crisis in some water deficient regions in Jilin province To utilize ground water storage, the water conservancy project should be build in addition to basic hydrogeological condition,... The concept of ground water reservoir, storage principle and its theoretical basis, storage conditions and methods, as well as high economic effect of the storage are discussed in the paper It is suggested that a model engineering for the ground water reservoir storage should be set up and utilized to mitigate the serious crisis in some water deficient regions in Jilin province To utilize ground water storage, the water conservancy project should be build in addition to basic hydrogeological condition, so, it is a cross and combine of hydrogeology and water conservancy engineering In future, it will become an important branch of the water conservancy engineering,i.e.engineering of ground water reservoir storage | 论述了地下水库的概念、蓄水原理及理论基础、蓄水基础条件和方法及重大蓄水效益。建议建设地下水库蓄水示范工程 ,推广利用地下水库蓄水 ,以缓解一些地区严重缺水的局面。利用地下水库蓄水除具备水文地质基础条件外 ,还必须修建水利工程。因此 ,它是水文地质学和水利工程学的交叉和结合 ,将来可能发展成为水利工程学的一个重要分支—“地下水库蓄水工程学”。 | With the development of human urbanization in the twentieth ce nt ury,urban environmental geo-logical research has become an important compone nt part in the area of hydrological,engineering-geologi-cal and environment al-geological research.Water resources and environmental geology are the cruci al prob-lems in urban construction.The problems of water resources include reserve water resources,urgently needed water resources and subsurface water re servoirs.The problems of urban environmental geology in-clude:(1)the... With the development of human urbanization in the twentieth ce nt ury,urban environmental geo-logical research has become an important compone nt part in the area of hydrological,engineering-geologi-cal and environment al-geological research.Water resources and environmental geology are the cruci al prob-lems in urban construction.The problems of water resources include reserve water resources,urgently needed water resources and subsurface water re servoirs.The problems of urban environmental geology in-clude:(1)the gen eral problem of water resources and geological environment about urban constr uction and development ,(2)the problem of geological environment resulting from urban geological effects,and(3)the problem of organic pollution of s oil and waters in densely inhibited districts and industrial areas.The key to s olving the urban environmental geological problems is research on lithological and structural conditions in subsurface space.Through a study of these basic conditions ,the problems about the urban geological environment and subsurfa ce water resources can be analyzed.By means of 3D structural model treatment of the relative position,configuration and physico-chemical features of th e urban geologic bodies in the sub-surface space,visualization technology can make basic geological conditions for city subsistence understood by unprofessi onal decision makers and present in urban developmental planning the value of subsurface geo-logical resources with which nature endows mankind.The applica tion of 3D visualization technology in the study of urban environmental geolog y is a frontier and up to now there is no systematic and complete precedent for its application.3D visual technology will usher in a new epoch of environme ntal geological study and is a direction of research for urban environmental g eology | 随着21世纪人类城市化建设的发展,城市环境地质研究成为水工环地质研究领域的一个重要组成部分,城市建设中的最主要问题是水资源问题和环境地质问题。城市水资源问题有:城市后备水源地的研究,以及应急水资源地和地下水库的研究。城市环境地质问题主要包括:(1)围绕城市建设和发展的一般性资源、地质环境问题;(2)城市地质作用产生的地质环境问题;(3)城市人口密集区及工业区的土壤和水体有机污染问题。解决城市环境地质问题的关键是对地下空间地层岩性及构造条件的研究,通过这些基础条件研究分析城市地质环境和地下水资源问题。可视化研究技术通过对城市地质体在地下空间的相对位置、形态、物化特征等三维构模处理,使这些城市赖以存在的地质基础条件可为非专业的决策层所理解,并在城市发展的规划中体现这些大自然所赋予人类的地下空间资源的价值。应用三维可视化技术对城市环境地质研究是一个全新的研究领域,目前尚没有系统完整的应用先例。三维可视化技术将在城市化环境地质研究中,开拓一个崭新的环境地质研究时代,成为城市环境地质研究的发展方向。 | | | | << 更多相关文摘 |
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